[2.0.x] Fix Dual X Carriage tool change crash (#11447)

Marlin/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/default/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/AlephObjects/TAZ4/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Anet/A6/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Anet/A8/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Azteeg/X5GT/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/BIBO/TouchX/cyclops/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/BIBO/TouchX/default/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/BQ/Hephestos/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/BQ/Hephestos_2/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/BQ/WITBOX/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Cartesio/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Creality/CR-10/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Creality/CR-10S/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Creality/CR-10mini/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Creality/CR-8/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Creality/Ender-2/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Creality/Ender-3/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Creality/Ender-4/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Einstart-S/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Felix/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/FolgerTech/i3-2020/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Geeetech/Prusa i3 Pro C/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Geeetech/Prusa i3 Pro W/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Infitary/i3-M508/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/JGAurora/A5/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/MakerParts/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Malyan/M150/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Malyan/M200/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Micromake/C1/enhanced/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Mks/Sbase/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/RigidBot/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/SCARA/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Sanguinololu/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/TheBorg/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/TinyBoy2/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Tronxy/X3A/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/UltiMachine/Archim2/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Velleman/K8200/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Velleman/K8400/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/Wanhao/Duplicator 6/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/delta/FLSUN/auto_calibrate/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/delta/FLSUN/kossel/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/delta/FLSUN/kossel_mini/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/delta/generic/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/delta/kossel_mini/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/delta/kossel_pro/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/delta/kossel_xl/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/gCreate/gMax1.5+/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/makibox/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/tvrrug/Round2/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/config/examples/wt150/Configuration_adv.h

   // Configuration for second X-carriage
   // Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
   // the second x-carriage always homes to the maximum endstop.
+  #define X1_MIN_POS X_MIN_POS  // set minimum to ensure first x-carriage doesn't hit the parked second X-carriage
+  #define X1_MAX_POS X_BED_SIZE // set maximum to ensure first x-carriage doesn't hit the parked second X-carriage
   #define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
   #define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
   #define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position

Marlin/src/inc/Conditionals_post.h

 #define Y_MAX_BED (Y_CENTER + (Y_BED_SIZE) / 2)
 
 /**
+ * Dual X Carriage
+ */
+#if ENABLED(DUAL_X_CARRIAGE)
+  #ifndef X1_MIN_POS
+    #define X1_MIN_POS X_MIN_POS
+  #endif
+  #ifndef X1_MAX_POS
+    #define X1_MAX_POS X_BED_SIZE
+  #endif
+#endif
+
+/**
  * CoreXY, CoreXZ, and CoreYZ - and their reverse
  */
 #define CORE_IS_XY (ENABLED(COREXY) || ENABLED(COREYX))

Marlin/src/module/motion.cpp

       if (axis == X_AXIS) {
 
         // In Dual X mode hotend_offset[X] is T1's home position
-        float dual_max_x = MAX(hotend_offset[X_AXIS][1], X2_MAX_POS);
+        const float dual_max_x = MAX(hotend_offset[X_AXIS][1], X2_MAX_POS);
 
         if (active_extruder != 0) {
           // T1 can move from X2_MIN_POS to X2_MAX_POS or X2 home position (whichever is larger)

Marlin/src/module/tool_change.cpp

           #endif
         }
 
-        // Save current position to destination, for use later
-        set_destination_from_current();
-
         #if HAS_LEVELING
           // Set current position to the physical position
           const bool leveling_was_active = planner.leveling_active;
 
         #if ENABLED(DUAL_X_CARRIAGE)
 
+          #if HAS_SOFTWARE_ENDSTOPS
+            // Update the X software endstops early
+            active_extruder = tmp_extruder;
+            update_software_endstops(X_AXIS);
+            active_extruder = !tmp_extruder;
+          #endif
+
+          // Don't move the new extruder out of bounds
+          if (!WITHIN(current_position[X_AXIS], soft_endstop_min[X_AXIS], soft_endstop_max[X_AXIS]))
+            no_move = true;
+
+          if (!no_move) set_destination_from_current();
           dualx_tool_change(tmp_extruder, no_move); // Can modify no_move
 
         #else // !DUAL_X_CARRIAGE
 
+          set_destination_from_current();
           #if ENABLED(PARKING_EXTRUDER) // Dual Parking extruder
             parking_extruder_tool_change(tmp_extruder, no_move);
           #endif
 
         #endif // !DUAL_X_CARRIAGE
 
-        #if HAS_LEVELING
-          // Restore leveling to re-establish the logical position
-          set_bed_leveling_enabled(leveling_was_active);
-        #endif
-
         #if ENABLED(SWITCHING_NOZZLE)
           // The newly-selected extruder Z is actually at...
           current_position[Z_AXIS] -= zdiff;
         #endif
 
+        #if HAS_LEVELING
+          // Restore leveling to re-establish the logical position
+          set_bed_leveling_enabled(leveling_was_active);
+        #endif
+
         // Tell the planner the new "current position"
         SYNC_PLAN_POSITION_KINEMATIC();
 
 
       feedrate_mm_s = old_feedrate_mm_s;
 
+      #if HAS_SOFTWARE_ENDSTOPS && ENABLED(DUAL_X_CARRIAGE)
+        update_software_endstops(X_AXIS);
+      #endif
+
     #else // HOTENDS <= 1
 
       UNUSED(fr_mm_s);